4

With a sterile:
Instrument i would pierce the blister just through the roof to allow the contents to ooze out. I would not remove the roof. I would cleanse the skin first. I would not attempt this if you are diabetic or were immunocompromised without a foot doctors involvement.
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6

Non-healing wound:
How long have you had it? Since it is draining, was it
Ever cultured .and you probably had antibiotics ?
Do you have high blood pressure? Did you injure it?
The best thing for you to do is to see your PCP . I think
You need blood tests , cultures of the wound , possibly MRI to rule out osteomyelitis. You might even need biopsy and referral to infectious disease consultant.
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7

If your diabetic:
Don't touch it go see a podiatrist. If your not diabetic and otherwise healthy, with a sterile instrument gently pierce the roof and allow fluid to ooze out. Cover with bandaid.
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9

The :
The thing you need to know about blood blisters is once "popped, " they are very susceptible to infection. The bloody fluid is a perfect media for bacterial growth.
With that in mind (assuming you're in a state of good health, not a diabetic or have poor circulation or are taking any blood thinners), go ahead and pop it. Get it from the side, where the skin meets the blister, and use a sterile instrument. Wash it with soap and warm water, and keep it clean and dry with a dry, sterile dressing (a band aid is ok). Don't use any topical antibiotic like bacitracin, neosporin, etc. Just keep it clean and dry until it's no longer "open" (draining). You might see a light red ring around it after a day or so, which is normal inflammation you need to heal.
Watch for signs of infection: increased pain, increased drainage or pus, swelling, redness, foul odor. At the first sign of infection, head to your doctor for a prescription for an antibiotic.
Try not to get arrested for practicing medicine without a license!
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10

Depends:
Depends on the etiology of the problem, and this is impossible to address, DX, in this format.
You should have an exam, if there is an infection present this will need to be treated with antibiotic.
If it is due to allergy, topical steroids will be Rxed.
This can only be DXed with an exam.
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14

Specialist:
The same principles are employed in treatment of foot and ankle conditions regardless of whether you are seen by a podiatrist or a foot and ankle orthopedist. It is important that you have a a good rapport with whomever you choose. If your pcp has suggested a particular doctor it may be because he or she has a good working relationship with that physician.
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15

Quite broad question:
All the conditions you are asking about can be examined by a podiatrist. The cause of each and the appropriate treatment is not the same for all. Warts are viruses resulting in a skin lesion. Calluses/corns are your skin's way of protecting itself from pressure. Blisters are breaks/peels in the skin resulting from friction but can be the result of internal injury/inflammation. Get checked.
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16

Quite broad question:
All the conditions you are asking about can be examined by a podiatrist. The cause of each and the appropriate treatment is not the same for all. Warts are viruses resulting in a skin lesion. Calluses/corns are your skin's way of protecting itself from pressure. Blisters are breaks/peels in the skin resulting from friction but can be the result of internal injury/inflammation. Get checked.
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17

Burn degrees:
Likely a second degree burn if clear blisters. Usually will heal in 1 week. Apply some antibiotic ointment. Now, if the burn is extensive or shows signs of infection including redness, pus, etc... Please see your physician.
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18

Don't deroof it. :
You don't want to deroof a blister. You can pop it, using a clean instrument, but if you're concerned (if the fluid is an unusual color, or if the surrounding skin is very red and swollen, or the blister is quite large, etc.), you may want to have your health care professional evacuate the blister for you. Keep it clean and dry as it heals.
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